Intangible Assets, Net (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets, Net

Intangible assets, net are summarized as follows:

	September 30, 2018			December 31, 2017
($ in thousands)
Definite-lived intangible assets:
Investment contracts and other	$	487,747		$	425,747
Accumulated amortization	(184,910		)	(167,309		)
Definite-lived intangible assets, net	302,837			258,438
Indefinite-lived intangible assets	43,516			43,516
Total intangible assets, net	$	346,353		$	301,954

Schedule of Activity in Intangible Assets, Net

Activity in intangible assets, net is as follows:

	Nine Months Ended September 30,
	2018			2017
($ in thousands)
Intangible assets, net
Balance, beginning of period	$	301,954		$	38,427
Additions (1)	62,000			275,700
Amortization	(17,601		)	(7,110		)
Balance, end of period	$	346,353		$	307,017

⁽¹⁾ See Note 4 for details on the acquired intangible assets related to recent business combinations.

Schedule of Estimated Amortization Expense of Intangible Assets Succeeding Years

Estimated amortization expense of intangible assets for the remainder of fiscal year 2018 and succeeding fiscal years is as follows:

($ in thousands)
Fiscal Year	Amount
2018	$	7,541
2019	30,110
2020	29,945
2021	29,934
2022	29,809
2023 and thereafter	175,498
	$	302,837